US2656115A

US2656115A - Railway sleeper of reinforced concrete with rail fastening bolts

Info

Publication number: US2656115A
Application number: US146246A
Authority: US
Inventors: Sonneville Roger
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-04-01
Filing date: 1950-02-25
Publication date: 1953-10-20
Anticipated expiration: 1970-10-20

Description

Oct. 20, 1953 v R. SON VILLE 2,656,115

RAILWAY EPER OE INFORCED CONCRETE W RAIL FASTENING BULTS Filed Feb; 25, 1950 2 Sheets-Sheet 1 Fgw ya I j q. Q IVIQIHI! y INVENTOR RsER Sow/Ev LLE BY ATTDRNE Y Oct. 20, 1953 R. SONNEVILLE v 2,656,115

RAILWAY SLEEPER OF REINFORCED CONCRETE WITH RAIL FASTENING BOLTS Filed Feb. 25, 1950 '2 Sheets-Sheet 2 5 ll A I N VENTOR :SONNEVIL BY ATTOR N E Y Patented Oct. 20, 1953 RAILWAY SLEEPER F REINFORCED CON- CRETE WITH RAIL FASTENING BQLTS Roger Sonneville, Paris, France Application February 25, 1950, SerialNo. 146,246 In- France April 1, 1949' 3- Claims.

The present invention has for its object to provide the combination of an improved railway sleeper of reinforced: concrete with a rail fastening bolt of a suitable form cooperating with said sleeper as wellas a device for molding said sleeper.

It is known to make railway sleepers of reinforced concrete, which offers, in certain cases, the advantage to remedy the lack of wood and makes itpossible, furthermore, to obtain: sleepers of ahigh strength. which do not become rotten.

One of the objects of the invention. consists in: making a concretesleeper which offers the above mentioned advantages and makes possible arapid and reliable fastening of the rails on said sleeper by means of suitable bolts.

Another object of theinvention consists in making said sleeper through a simple, rapid and economical method of manufacture.

These purposes are attained through the combination in accordance with the invention which comprises an. improved railway sleeper" of reinforced concrete having; more particularly; along its longitudinal axis, a mainmetallic reinforcement on which the hooking of the rail fastening bolts is eif'ected directly, said reinforcement being formed of' a steel structural beam having a vertical web with recesses in which the heads of a suitable shape of the said bolts are inserted.

Other" characteristic features and advantages will become apparent from the ensuing descriptiorr taken with reference to the accompanying drawing, given by way of example; and in which:

Fig. 1 is an elevation view showing a sleeper made accordance with a preferred embodiment of the invention.

Fig. 2* is a plan view showing said sleeper.

Fig. 3 is an elevation View on a larger scale the left hand part of which is a section along line 3-3 of Fig. 4 and showing one part of the sleeper in accordance with the invention.

Fig. 4 is a plan view on thesame scale as Fig. 3' the left hand part of which is a sectional view along line 4-4 of Fig. 3 and showing one part of the sleeper in accordance with the invention, the bolt being assumed to be in place and not cut off.

Fig. 5- is a cross-sectional view along line 5-5 of Fig. 3' showing a sleeper in accordance with the invention.

Fig. 6 is a vertical sectional view along line 6-4; of Fig; l on a larger scale through one part of the sleeper and showing the details of the fastening of abolt in its recess.

Fig. '7 is a view of this same: part in ahorizontal section along line l--1' ofFig. 6, and

Fig. 8 is: a perspective View showing. one: part of amould: intended for making a sleeper in accordance. with the-invention.

Fig. 9" is asideview of the bolt.

Fig- 10 is a side. view of. the. bolt taken atrigh-t angles to Fig; 9, and

Fig.1l isanend' view of thebolt;

Theimproved railway sleeper of reinforced concrete which forms the object of the present invention comprises along its longer axis: a reinforcement which consists of a steel structural beam. Said sleeper may have a general: prismatic shape as theusual wood sleepers or may comprise, in a known Way, a middle part of reduced section serving as a brace betweenbothextreme partson which the rails rest. According to the preferred form of execution ofth'e invention which is: shown in: Fig: I the sleeper is formed of two concrete end blocks or i= which comprise. inside reinforcements (not shown) and which are connected through the said axial structural beam 2 which forms the mainreinforcement' and brace. According to one of the featu'res of the inventionsaid main reinforcement 2 is formed ota steel structural beam which comprises a vertical web as, for example an I or inverted T girder; It will be advantageouslyform'ed of one of the two halves of old rails obtained through sawing a rail in the direction of its length; it will be possible to use, indifferently, the portion which comprises the head of the rail or that which comprises the foot; in both cases the remaining half web 3 is arranged upwardly, the head or'thefoot being thus in the lower part. On Figs. 1 and 2 a half-rail on the side of the foot is shown the left hand part and a halfrail on the side of the head is shown on the rig-ht hand part.

Both concrete end blocks maybe 01" any shape, the profiles shown in Figs. 1 and 2 being given only by way of example. The same is true for the arrangement and the connection of the other reinforcements than the main reinforcement which are shown in Fig. 5.

The web of each; reinforcement comprises to wards eachof its ends two recesses 4 of a particular profile intended to receive fastening bolt heads of the corresponding rail; each of said recesses which is obtained through punching or oxy-cutting comprises a so-called dovetail housing 5, i. e. a recess of'a trapezoidal shape in the shape of a segment of circle or of another curve being enlarged downwardly and opening through a notch 6 which is narrower than the base 1 of the recess.

The rail fastening bolts 8 which are used with this type of sleeper have a fiat head 9 the section of which is of the same shape as that of recess 5 but the sizes of which are slightly smaller. Head 9 of the bolt being placed in its recess and the bolt being drawn upwardly, a play in remains between the base of the said bolt head 9 and base 1 of the recess as shown, more particularly, on a larger scale on Fig. 6.

A vertical tunnel or passage II is provided in the concrete above the recess at the moment of pouring; the section of said passage l i through a horizontal plane is a rectangle the largest dimension of which is arranged perpendicularly to the axis of the sleeper (see Fig. 5); its dimensions are such that they allow the introduction of a bolt provided with the above described head 9, said head being moved down to the position shown in dotted lines on Fig. 4, i. e. transversely to the Web of the main reinforcement 2.

Since head 8 must then be turned by 90 in order to penetrate entirely into its recess 5 as shown in full lines on Fig. 4, a substantially horizontal cavity 12 -42 of a suitable section and opening on each of the side faces of the sleeper is provided on both sides of the brace web.

Both cavities l2 -|2 or horizontal tunnels are off-set with respect to each other in the horizontal plane as shown in Fig. 4 and on larger scale on Fig. 7 so as to form stops l3 l3 for the bolt head 9. Dimension A (Fig. '7) of cavity l1 must be at least equal to or practically slightly larger than the half-diagonal OD of the base rectangle of bolt head 9 in order to allow of the rotation of said head 9 when the latter has been moved down to the bottom of its recess 5.

The fastening of rail R on the concrete end block by means of bolts 8 may be effected through the medium of clips 14 of any type, each clip being clamped through a nut [5 on a bolt 8 passing through the same. It is a kind of fastening of this type which is shown on Figs. 3, 4 and 5.

It is also possible to use resilient fastening devices similar to those described in United States Patent No. 2,480,388 filed on March 16, 1948, for a resilient device for fixing railway rails to the sleepers. It is a fastening method of this kind which is shown in Figs. 1, 2 and 6. In this case, of course, the sleeper will comprise cavities l6 which are necessary for receiving the loop B of the fastening piece or an intermediary supporting piece for said loop.

In order to fasten a bolt 8 on the above described sleeper it is sufiicient to move down said bolt the head 9 below, in the vertical passage II as far as the bottom of the recess 4, then to rotate said bolt by 90 clockwise, i. e. till head 9 comes to strike against the walls It -l3 of the cavities l2 l2 The bolt is then locked in its recess. After the insertion of the clip or of the resilient fastening piece the tightening of the nut l5 draws bolt 8 upwardly while clamping it on the upper wall of its recess, thus rendering impossible any rotation.

Cavities l2 l2 opening at N and I! on the side faces of the concrete end block render possible, furthermore the draining of water or the removal of sand, pebbles or various other bodies which could penetrate in through the vertical passages.

The cavities l2, I2 may be provided at the moment of the pouring through a very simple method which consists in using a system of cores constituted by rods havin a suitable profile and one of which at least passes horizontally right through the mould as well as through the web of the main reinforcement through the hole receiving the bolt head.

Fig. 8 shows by way of example a portion of a mould for making sleepers through the said method in accordance With the invention. The mould is shown in its inverted position, the bottom (the upper part of the figure) being removed in order to show the main reinforcement 3 supported by horizontal cores !8 and I9 of suitable shapes which make it possible to obtain the cavities 12 and IF, one, l8, of said pins passing entirely right through the mould as well as through the web 3 of the main reinforcement through the hole receiving the bolt head and thus resting on the side walls 28 and 2| of the mould.

The cores corresponding to each of the four fastening holes for the bolts make it possible to maintain the main reinforcement 3 of the sleeper in the mould in a positive and precise manner at the moment of the pouring of the concrete as well as in the course of the manipulations of the mould filled with fresh concrete, and make it even possible to turn down the mould without the main reinforcement 3 and the other reinforcements which may be rendered fast with it, pressing on the fresh concrete.

The vertical passage H is provided by means of a prismatic core having a rectangular section, not shown.

Of course, the invention is not limited to the forms of execution which are described and shown and which were given only by way of examples.

Having now described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a railroad tie, the combination of a concrete sleeper, a main longitudinal metallic rein forcement embedded in said sleeper and consisting of a steel structural beam having a vertical web, and rail fastening bolts each consistin of a rectangular dove tail head hooked in said web and a shank portion extending through said sleeper above the upper surface thereof of the web, said web being provided with recesses, each of a dove tail shape adapted to receive the head of one of said bolts and a vertical notch for the shank portion thereof extending from said dove tail housing to said sleeper, said latter having vertical passages of rectangular cross, section corresponding to the size of said bolt heads,

. each disposed above one of said recesse with its length arranged transversely to said beam and opening into the upper surface of said sleeper and into said notch, and cavities, one on each side of each recess, opening into the dove tail recesses and adapted to allow of a rotation by of the dove tail head of said bolts, the wall of said cavities being arranged as stops for said bolt heads at the end of said rotation.

2. In a railroad tie, the combination of a concrete sleeper, a main longitudinal metallic reinforcement embedded in said sleeper and consisting of a steel structural beam having a vertical web, and rail fastening bolts each consisting of a rectangular dove tail head hooked in said web and a shank portion extending through said sleeper above the upper surface of the web, said web being provided with recesses, each 'of a dove tail shape adapted to receive the head of one of said bolts and a vertical notch for the shank portion thereof extending from said dovetall housing to said sleeper, said latter having vertical passages of rectangular cross section corresponding to the size of said bolt heads, each disposed above one of said recesses with its length arranged transversely to said beam and opening into the upper surface of said sleeper and into said notch; and horizontal tunnels, one on each side of each recess, opening into the dove tail recess and into the corresponding side face of said sleeper, both of the tunnels corresponding to one and the same recess being adapted to allow of a rotation of 90 of the dove tail head of said bolts, the walls of said tunnels being arranged as stops for said bolt heads at the end of said rotation.

3. In a railroad tie, the combination of a concrete sleeper, a main longitudinal metallic reinforcement embedded in said sleeper and consisting of a steel structural beam having a vertical web, and rail fastening bolts each consisting of a rectangular dove tail head hooked in said web and a shank portion extending through said sleeper over the upper surface of the web, said web being provided with recesses, each of a dove tafi shape with a flat bottom adapted to receive the head of one of said bolts and a vertical notch for the shank portion thereof extending from said dove tail recess to said sleeper, said latter having vertical passages of rectangular cross section corresponding to the size of said bolt heads, each disposed above one of said recesses with its length arranged transversely to said beam and opening into the upper surface of said sleeper and into said notch, and horizontal tunnels, each on each side of each recess, said tunnels being disposed transversely to said beam and opening into the corresponding side face of said sleeper and into the dove tail recesses with a Width less than the length of the bottom of said recesses, both of the tunnels corresponding to one and the same recess being parallel and Offset in the same horizontaI plane, so as to provide stops for the head of the bolts inserted in said recess after its rotation by 90.

ROGER SONNEVILLE.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 711,277 Bell Oct. 14, 1902 793,789 Homan July 4, 1905 1,027,370 Baechler May 21, 1912 1,396,566 Fieg Nov. 8, 1921 1,533,411 Hellman et al. Apr. 14, 1925 1.699,197 Lossl Jan. 15, 1929 1,886,265 Andreianov Nov. 1, 1932 2,037,965 Colt Apr. 21, 1936 2,480,388 Sonneville Aug. 30, 1949 FOREIGN PATENTS Number Country Date 398,461 France Mar. 24, 1909 568,471 France Dec. 22, 1923 377,499 Italy Dec. 18, 1939